CN104781014B - nozzle - Google Patents

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Publication number
CN104781014B
CN104781014B CN201380046338.4A CN201380046338A CN104781014B CN 104781014 B CN104781014 B CN 104781014B CN 201380046338 A CN201380046338 A CN 201380046338A CN 104781014 B CN104781014 B CN 104781014B
Authority
CN
China
Prior art keywords
valve
nozzle
water
flow path
steel plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201380046338.4A
Other languages
Chinese (zh)
Other versions
CN104781014A (en
Inventor
阪本浩
阪本浩一
原口洋
原口洋一
池本裕二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Co Ltd Of General Sharp Special Metallurgical Technology Japan
Original Assignee
Co Ltd Of General Sharp Special Metallurgical Technology Japan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Co Ltd Of General Sharp Special Metallurgical Technology Japan filed Critical Co Ltd Of General Sharp Special Metallurgical Technology Japan
Publication of CN104781014A publication Critical patent/CN104781014A/en
Application granted granted Critical
Publication of CN104781014B publication Critical patent/CN104781014B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B05B15/18—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/12—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
    • F16K1/126—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/306—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/3066—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the valve element being at least partially hollow and liquid passing through it when the valve is opened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Nozzles (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

Durability can be simply improved in the nozzle for being built-in with valve.The nozzle for spraying water to the object as target has: having the nozzle body (24) of the flow path of water and is configured at the valve (25) of the inside of the flow path (24a) of nozzle body (24), at least part in the inner surface of flow path (24a), including the position contacted with valve (25) is formed with the envelope being made of diamond-like coating.

Description

Nozzle
Technical field
The present invention relates to the nozzles to purpose object injection water.
Background technique
In the manufacturing device (manufacturing line) for manufacturing steel plate by rolling, including in order to remove be formed by oxide skin, Or cooling high-temperature steel plate and to the process of steel plate injection water.The case where this injection water, sprays from nozzle as well-known Out.
A kind of each in such nozzle is disclosed in patent document 1 to 4 is built-in with the technology of valve.Due to each A nozzle all has valve, so as to which the nozzle for spraying water and the nozzle for not spraying water is selected independently, is able to suppress excessive confession Therefore water, draining can be realized energy-saving and high efficiency.
In addition, inhibit the water supply to nozzle here if open and close valve is arranged in the big piping in the upstream side to nozzle supplies water, Then the shock of so-called water hammer is larger, can make a very bad impression to piping etc..By the way that valve is arranged in each nozzle, it is able to suppress this Situation.
In addition, in order to improve the wear resistance of valve, carrying out Si Tailijia sometimes for the valve for being used in high press fit pipe Work built-up welding (ス テ ラ イ ト manufactured meat contains り).
Patent document 1: tekiaki 59-76616 bulletin
Patent document 2: tekiaki 60-133913 bulletin
Patent document 3: Japanese Laid-Open Patent Publication 6-91320 bulletin
Patent document 4: Japanese Laid-Open Patent Publication 9-52111 bulletin
If valve is arranged in nozzle as described above, worked in nozzle the closing for carrying out flow path, opening by valve, because This, appears in the position for contacting, being detached from and sliding between valve and stream inner surface.In the past, due to being installed on high press fit pipe Valve carry out Si Taili and process built-up welding, therefore Si Taili processing built-up welding similarly is carried out to above-mentioned position and to improve its wear-resistant Property.But the processing of Si Taili processing built-up welding itself is expensive.Therefore, it is processed in a large amount of uses with Si Taili is implemented In the case where the nozzle of the valve of built-up welding, the increase of its cost will lead to, therefore abandon importing sometimes.
In addition, due to the Reusability of valve, seal member becomes difficult to bear resistance to sliding and cause to seal in sliding part Part distortion, breakage, to appear in premature period, there is a situation where poor sealings.
Summary of the invention
Therefore, in view of the above problems, problem of the present invention is that in the nozzle for being built-in with valve, providing one kind can be simple And the nozzle of durability is improved cheaply.
In the following, the present invention will be described.
Invention described in technical solution 1 is related to the nozzle to the object injection water as target, which has: having water Flow path nozzle body and be configured at nozzle body flow path inside valve, it is in the inner surface of flow path including with At least part including the position of valve contact is formed with the envelope being made of diamond-like coating.
According to invention described in technical solution 2, in the nozzle described in technical solution 1, valve is open and close valve.
Invention according to technical solution 3, in the nozzle described in technical solution 1 or 2, the position of contact is: due to Valve contacts and forbids the injection of water with the inner surface of flow path, and allows water since valve is moved to from the posture that contact is detached from The position of injection.
According to the invention of technical solution 4, in the nozzle described in any one of technical solution 1 to 3, the position of contact is: The position that valve is contacted with stream inner surface always, and be the position with the opening and closing contact of valve in the portion that stream inner surface is slided Position.
According to the present invention, the contact in valve with inner nozzle surface, be detached from position and sliding position, can it is simple and Durability is improved cheaply.
Detailed description of the invention
Fig. 1 is the figure being illustrated to a mode, is a part for schematically illustrating the manufacturing device 10 of hot rolled steel plate Figure.
Fig. 2 amplification shows the position equipped with cooling device 20 in Fig. 1, is said for the composition to cooling device 20 Bright figure.
The schematic diagram of manufacturing device 10 from Fig. 3 is the direction shown in the III in Fig. 2.
Fig. 4 is the figure of the part for the water supplying unit 21 being conceived in Fig. 3.
Fig. 5 is the figure of a part that amplification shows Fig. 4.
Fig. 6 is the section along line shown in the VI-VI in Fig. 5.
Fig. 7 is the figure being illustrated to the closed posture of nozzle 23.
Fig. 8 is the figure being illustrated to the flowing of working fluid.
Fig. 9 is the sectional view being illustrated to the nozzle of other examples.
Specific embodiment
According to the mode for carrying out an invention described below, above-mentioned effect and interests of the invention can be understood. In the following, the present invention will be described for mode based on the figure.But the present invention is not limited to these modes.
Fig. 1 is the figure being illustrated to a mode, is a part for schematically illustrating the manufacturing device 10 of hot rolled steel plate Figure.In Fig. 1, steel plate 1 along on the left of the paper (upper process side, upstream side) (lower process side, downstream side) to the right direction It is conveyed, paper up and down direction is vertical direction.Sometimes will from this process side (upstream side) towards lower process side (downstream side) Direction be denoted as logical plate direction, on orthogonal to that direction, the wide direction of the plate of the steel plate passed through is denoted as plate width direction.Separately Outside, it omits to be easy to observe in the figure and records duplicate label.
As shown in Figure 1, the manufacturing device 10 of hot rolled steel plate have hot finishing mill line 11, conveying roller 12, dehydration roll 13 and Cooling device 20.
In addition, though illustration omitted and explanation, but be configured with and add at the position than the top process side of hot finishing mill line 11 Hot stove, thick roll mill column etc., get all the condition of the steel plate for entering hot finishing mill line 11 ready.In addition, entering in hot finishing mill 11 Side, which is provided with, enters side thermometer for measure chilling start temperature.
On the other hand, between the lower process side of dehydration roll 13 is provided with for sloughing between dehydration roll 13 and steel plate 1 The dehydration sprayer of pressure (hydraulic) water that gap leaks out a little, being sprayed from cooling device.Also, it is useful in the setting of side out of dehydration roll 13 Stop the side thermometer out of temperature (being final rolling temperature in the case where without chilling) in measurement chilling.In addition, also matching in steel plate It is equipped with the pinch roll of tension as defined in applying.
Hot rolled steel plate is manufactured in the following way.That is, being extracted from heating furnace and being rolled into regulation thickness in thick roll mill The thick profile (thick バ ー) of degree, continuouslys while by control temperature and is rolling to defined thickness in hot finishing mill line 11.So Afterwards, steel plate is cooled in cooling device 20.Steel plate after dehydration roll 13 is cooled to regulation by other cooling devices Coiling temperature, by coiling machine wound into rolls.
In the following, the manufacturing device 10 to hot rolled steel plate (is only called " manufacturing device 10 " sometimes below.) said in detail It is bright.Fig. 2 amplification shows the position equipped with cooling device 20 in Fig. 1, is illustrated for the composition to cooling device 20 Figure.The schematic diagram of manufacturing device 10 from Fig. 3 is the direction shown in the III in Fig. 2.Therefore, in Fig. 3, paper is up and down system Vertical direction, the paper or so for making device 10 are plate width direction and are logical plate direction from paper back side towards the direction of nearby side.
From fig. 1, it can be seen that hot finishing mill line 11 in the method along logical plate direction be equipped with side by side 7 board 11a ..., 11f,11g.Each board 11a ..., 11f, 11g have roll mill, with thickness, machine needed for can satisfy final finished steel plate The mode of the conditions such as tool property, surface quality sets the rolling conditions such as reduction ratio.
Each board 11a ..., 11f, 11g roll mill have actually sandwich and depress steel plate a pair of of working roll 11aw, 11aw ..., 11fw, 11fw, 11gw, 11gw and be configured to a pair of of the backing roll being in contact with each other with above-mentioned working roll periphery 11ab,11ab,…,11fb,11fb,11gb,11gb.In addition, the configuration of the rotary shaft of above-mentioned working roll and backing roll is in shell 11ah ..., 11fh, 11gh be opposed to erect upright portion (in final board 11g, referring to Fig. 3 upright portion 11gr.) it Between, above-mentioned shell 11ah ..., 11fh, 11gh be arranged by such a way that inside has above-mentioned working roll and backing roll.That is, from Fig. 3 It is found that the upright portion of shell is erected in a manner of the route (roll line (パ ス ラ イ Application)) of the logical plate across steel plate 1.
Conveying roller 12 is the workbench of steel plate 1, and is the roller that the steel plate 1 is conveyed along logical plate direction.Therefore, conveying roller 12 It at predetermined intervals and is shown multiple along logical plate direction.
Dehydration roll 13 is avoided due to sandwiching steel plate 1 when rolling and from the downward process side of pressure (hydraulic) water that cooling device 20 sprays The roller of outflow.
Cooling device 20 is arranged between hot finishing mill line 11 and dehydration roll 13 and cools down to the steel plate after rolling Device.Cooling device 20 have the water supplying unit 21 of top side, the water supplying unit 31 of following side, top side directing plate 41, And the directing plate 42 of following side.
The water supplying unit 21 of top side is arranged in the top of roll line and supplies cooling water to the upper surface side of steel plate 1 Unit has spray head 22 and nozzle 23.
From Fig. 2, Fig. 3 it is found that spray head 22 is the piping along plate width direction, such spray head 22 is along logical plate direction and shows It is multiple.As illustrated in FIG. 3, cooling water is supplied from water supplying pipe 20a towards spray head 22, and spray head 22 is supplied to each nozzle 23 To cooling water.
Nozzle 23 is from multiple nozzles of 22 branch of spray head, upper surface side of the jet port towards steel plate 1 (roll line).Figure 4 show the figure of the part for the water supplying unit 21 being conceived in Fig. 3.Fig. 5 is the figure of a part that amplification shows Fig. 4.Also, Fig. 6 In the section of line shown in VI-VI along Fig. 5 is shown.Therefore, the section of nozzle 23 is shown in Fig. 6.
From Fig. 3 to Fig. 5 it is found that multiple nozzles 23 are arranged to comb teeth-shaped along the pipe range direction of spray head 22, i.e. plate width direction.
The nozzle 23 of the method is cooling jet water stream (such as the thickness of 5mm to 30mm or so for being capable of forming fan-shaped.) Flat injection nozzle.But it's not limited to that, oval injection nozzle or nozzle ring etc. can be used in nozzle 23.According to With upper type, it is not easy to generate temperature unevenness while cooling.
In addition, as can be seen from Figure 6, nozzle 23 has nozzle body 24, flow path 24a is formed on the inside of it, pressure (hydraulic) water is at this Flow path 24a passes through.It is connected in one end of flow path 24a and spray head 22, the other end is open end.Moreover, matching in flow path 24a It is equipped with open and close valve 25.It is moved in flow path 24a by open and close valve 25, so as to switch the closing and opening of flow path.Specific feelings Condition is as described below.
Open and close valve 25 is the component in the bottomed tube that a side side has bottom 25a and another party side is opened.Open and close valve 25 periphery is formed as more slightly smaller than the inner circumferential of flow path 24a.In addition, the periphery side end of bottom 25a is cut off with being inclined by, be formed as with The rake of the expander of the inner peripheral surface of flow path 24a.
It is equipped with hole 25b in a part of the side wall of open and close valve 25, by the inside and outside connection of tubular.
Also, protrusion 25c is equipped in such a way that the outer peripheral surface from open and close valve 25 is outstanding.
In addition, being equipped with sealing element 26 at the position of the inner faces contact of many places and flow path 24a of the outer peripheral surface of open and close valve 25.? In the method, it is respectively arranged at the end of downstream side of the downstream side edge part of hole 25b, the peripheral part of protrusion 25c and open and close valve 25 Peripheral part.Sealing element 26 is usually made of rubber etc. mostly in order to improve leakproofness.
Such open and close valve 25 is configured at as shown in Figure 6 in the flow path 24a of nozzle body 24.That is, being in flow path with bottom 25a The mode of the upstream side of 24a configures.As described above, the periphery of open and close valve 25 is formed as more slightly smaller than the inner circumferential of flow path 24a, therefore Gap is formed between open and close valve 25 and the inner surface of flow path 24a.Also, the outer surface by switching bottom 25a is interior with flow path 24a's The contact and disengaging on surface, and allow hand over the opening and closing of nozzle 23.
In addition, protrusion 25c is configured in the widened expansion section 24b of internal diameter of the flow path 24a setting of nozzle body 24, and And the position of protrusion 25c is set in a manner of it will be enlarged by portion 24b and separate.Being connected separately in the side being separated out and another party makes Flow path 24c, 24d that working fluid outflow flows into.If pressurizeing from flow path 24c by working fluid, arrow of the open and close valve 25 to Fig. 6 Direction shown in q is mobile, and flow path is open.On the other hand, if pressurizeing from flow path 24d by working fluid, open and close valve 25 is into Fig. 6 Direction shown in arrow p is mobile, flow path closing.
In this mode, it is connect in the bottom 25a of the inner surface of flow path 24a and open and close valve 25 with the inner surface of flow path 24a The position of touching is formed with (is denoted as " DLC " by diamond-like coating (diamond like carbon) sometimes below.) constitute quilt Film.As a result, in the contact portion of bottom 25a and flow path 24a, its wear resistance can be made to improve.In addition, in sealing element 26 and flow path Contact portion between the inner surface of 24a can be such that sliding property improves.That is, since wear resistance and sliding property improve, it is thus possible to Improve the durability of nozzle.In addition, the film of DLC with Si Taili process built-up welding compared with inexpensively, therefore, by illustrating above Content it is found that in view of being needed in manufacturing device 10 using a large amount of nozzle, it is very big in the viewpoint advantage of its cost.
Also, inventors pass through following the study found that being limited to the case where being used in nozzle, Si Taili can be processed heap Weldering is replaced into DLC.That is, in general, the phenomenon that will appear referred to below as cavitation erosion when closing the valve of high press fit pipe, it may be assumed that Water is mobile in the downstream side of valve due to inertia, and dirty in valve is formed about vacuum, the water of surrounding be depressurized and in water There is bubble.Then, the bubble collapse when the pressure recovery of water, still, when disappearance, generates percussion wave.If being attached in piping Bubble collapse then occurs to corrode (ablation), damages piping.In addition, even if valve open in the state of, in the somewhere flow path of valve Narrow position hydraulic pressure is high, it can also happen that cavitation erosion when then hydraulic pressure reduces.Therefore, it in high press fit pipe, is being wanted as valve The position optimum of watertightness is asked to implement firm Si Taili processing built-up welding.
On the other hand, inventor considers as follows.In the case that valve is installed in nozzle, even if valve is closed, due to from Shorter except valve to nozzle, air can also be externally entering nozzle interior, do not keep vacuum around valve and cavitate.? In the case where the aperture of shrinking valve, cavitation erosion may cause, but before the high hydraulic pressure for becoming bubble collapse, water is released to Outside nozzle.Therefore, it is not limited to the Si Taili processing built-up welding with corrosion resistance, even the unit of corrosion resistance can not yet Applied to the nozzle with valve.According to the presumption, inventor thinks: even if not applying the built-up welding with thickness to a certain degree and answering With the coating (envelope) of opening/closing portion and sliding part raising wear resistance to valve, it is also able to extend the service life of the nozzle with valve.Base In the viewpoint, as coating type and investigated TiCN, TiN, TiAlN, CrN etc., be as a result concluded that due to right The nozzle of injection water does not have heat resistant requirements, therefore, can using coefficient of friction is low and high rigidity, low friction film relatively low Temperature (200 DEG C) under coated, when coating, does not damage nozzle and the DLC coating of valve is more appropriate.Also, it is prepared for applying The preproduction of DLC coating has carried out validation test with the presence or absence of problem to its function.As a result, it has been found that preproduction is not less than answering With the product of Si Taili processing built-up welding.
In this mode, as described above special in flow path 24a inner surface as shown in the position of painted black in Fig. 6 Need wear resistance, sliding property, with the contact portion of the bottom 25a of open and close valve 25 and the contact with sealing element 26 (sliding) range Cover DLC film.
But be not limited to be formed locally DLC, it can be in the entire inner surface of flow path 24a or than above-mentioned needs The bigger range in position partial mulching DLC film.
As described above, the contact between the bottom 25a of open and close valve 25 and the inner surface of the flow path 24a of nozzle body 24 is repeatedly Contact and disengaging, to carry out the opening and closing of nozzle 23, therefore, at the position, preferably wear resistance is high.On the other hand, preferably close Sliding property is good (coefficient of friction is small) between sealing 26 and the inner surface of flow path 24a.According to DLC, any performance compared with the past is all It can improve, therefore, both performances can be improved simultaneously.
But improved in view of further performance, it can be in the bottom 25a of open and close valve 25 and the inner surface of nozzle body 24 The DLC that the contact site application wear resistance of 24a improves.For this purpose, it can be cited for example that making the ratio of the hydrogen contained in DLC reduces Method.
Manufacture about above various DLC films can use well known method.
Fig. 2, Fig. 3 are returned to, the water supplying unit 31 of following side is illustrated.Water supply list from following side known to Fig. 2, Fig. 3 Member 31 is configured at the lower section of roll line, is the unit of the lower face side supply pressure (hydraulic) water to steel plate 1.The water supplying unit 31 of following side It is opposite disposed with the water supplying unit 31 of the upper surface of above-mentioned side, although the injection direction of pressure (hydraulic) water is different, respective composition with it is upper The water supplying unit 21 for the upper surface of stating side is identical.
But due to being configured with conveying roller 12 in the lower section of steel plate 1, become following water supplying unit 31 from conveying To the mode of the lower face side of steel plate 1 injection pressure (hydraulic) water between roller 12.
The directing plate 41 of top side is arranged in the plate between the roll line of conveying steel plate 1 and the water supplying unit 21 of top side The component of shape.The directing plate 41 of top side avoid steel plate 1 front end and steel plate 1 in addition to this other positions with above The water supplying unit 21 of side is contacted or is hooked.
Directing plate 41 in top side is equipped with the hole for passing through the pressure (hydraulic) water sprayed from nozzle 23, and what is sprayed from nozzle 23 adds Press water by reaching steel plate 1 behind the hole.In addition, the drainage hole of discharge water can be set in the directing plate 41 in top side.
The directing plate 42 of following side is arranged in the plate between the water supplying unit 31 of following side and the roll line of conveying steel plate 1 The component of shape.Especially it can be avoided the front end hooking of steel plate 1 in water supply when making steel plate 1 by manufacturing device 10 as a result, Unit 31 or conveying roller 12.
In addition, the jet flow of pressure (hydraulic) water of the directing plate 42 of side equipped with the water supplying unit 31 for making side from below passes through below Inflow hole.Steel is reached after the directing plate 42 that the spraying pressurized water stream of the water supplying unit 31 of side passes through following side from below as a result, The lower surface of plate 1 is able to carry out cooling appropriate.In addition, the drainage hole of discharge water can be set in the directing plate 42 of side below.
Here, the directing plate 42 of following side between working roll 11gw and conveying roller 12, between two conveying rollers 12 and It is respectively configured between conveying roller 12 and dehydration roll 13.
According to the composition of manufacturing device 10 as described above, especially cooling device 20 nozzle 23, companion can be improved The durability of the contact site formed with the movement of the open and close valve 25 for spraying water and stopping water spray in nozzle 23.Separately Outside, compared with the past be cheap and to simply implement when improving such durability.As noted previously, as a manufacture There are many quantity of nozzle used in device and cooling device, therefore its effect is very big.
Next, being illustrated to the example of the manufacturing method for the hot rolled steel plate for having used water supplying unit 21,31.
According to above-mentioned manufacturing device 10, the manufacture of steel plate is for example carried out in the following manner on the whole.That is, utilizing coiling machine Leading steel plate 1 is batched, then, starts the rolling of next steel plate 1.
The front end of the next steel plate 1 is by hot finishing mill line 11, in the front end of steel plate 1 by being configured at lower process side Pinch roll (not shown) after, start steel plate 1 clamping.Defined tension is determined to steel plate 1 as a result, is then started permanent The rolling in region.Steel plate 1 passes sequentially through hot finishing mill line 11, to obtain the steel plate 1 of desired shape and surface texture.
Steel plate 1 obtained by rolling finally coils into web-like by coiling machine.
In above-mentioned a series of hot rolling, cooling device 20 is configured in the lower process side of hot finishing mill line 11, it is single from supplying water 21,31 pairs of steel plates 1 of member spray pressure (hydraulic) water, as a result, control steel plate 1 at desired temperature.Water supplying unit 21,31 moves substantially Make as described below.Here, it is illustrated by taking water supplying unit 21 as an example.
Pressure (hydraulic) water is sprayed as described below from nozzle 23.That is, as shown in single dotted broken line in Fig. 6, in the opening of open and close valve 25 Under posture, pressure (hydraulic) water is flowed into out of spray head 22 pipe into the flow path 24a of nozzle 23, from the open end of nozzle body 24 to steel plate 1 injection pressure (hydraulic) water.That is, pressure (hydraulic) water collides the bottom 25a of open and close valve 25, flowed between flow path inner face 24a and open and close valve 25, from Hole 25b is flowed into the inside of open and close valve 25.Then, the other end, that is, open end of open and close valve 25 is reached, and then from nozzle body 24 Open end spray pressure (hydraulic) water.
On the other hand, under the closed posture of open and close valve 25, posture as shown in Figure 6 to 7 is such, on open and close valve 25 It rises, the inner surface of flow path 24a is contacted with bottom 25a.The flow path closing of pressure (hydraulic) water as a result, forbids spraying pressure (hydraulic) water from nozzle 23.
Open and close valve 25 is opened and closed by working fluid to flow path 24c, 24d flowing.It shows in Fig. 8 for explanation Figure.Fig. 8 is schematic diagram when observing from below Fig. 6.From Fig. 6 to Fig. 8 it is found that working fluid about open and close valve 25, makes valve opening Flow path 24c and the flow path 24d of valve closing are independent.
Therefore, if being pressed into working fluid to being pressurizeed in the flow path 24c of valve opening, as can be seen from Figure 6, open and close valve 25 become the posture opened to the movement of the direction of arrow q.At this point, the working fluid in the flow path 24d of valve closing is to be pushed out Mode it is mobile.It when closing open and close valve 25, pressurizes in the flow path 24d of valve closing, thus becomes the posture of Fig. 7.
Fig. 9 is the figure for showing the water supplying unit of other examples.Fig. 9 is the figure with the observation of Fig. 6 same viewpoint.
It is different in terms of replacement nozzle 23 has nozzle 23 ' in the water supplying unit of this example.Nozzle 23 ' is that have The example of open and close valve 25 ' referred to as check valve.It constitutes are as follows: the 25 ' a of valve body to be exerted a force by spring 26 ' and nozzle body 24 ' The inner surface of 24 ' a of flow path contacts and closes 24 ' a of flow path.On the other hand, 25 ' a of valve body presses pressure (hydraulic) water to be sprayed, overcomes The elastic force of spring 26 ' and keep 25 ' a of valve body mobile, be detached from 25 ' a of valve body from the inner surface of 24 ' a of flow path, thus flow path 24 ' a are open and spray pressure (hydraulic) water.Have hole 25 ' b same as above-mentioned hole 25b, the flowing of pressure (hydraulic) water in 25 ' a of valve body It is identical as said nozzle 23.
Therefore, it in the mode of this example, is needed in the contact portion of 25 ' a of valve body and the inner surface of 24 ' a of flow path wear-resisting Damage property, can be in the above-mentioned DLC of the certain applications as shown in the part of painted black in Fig. 9.
Above-mentioned nozzle and cooling device used as the cooling device of the hot rolled steel plate in hot rolled steel plate manufacturing line and It is beneficial.In addition to this, for example, consider be applied to hot rolled steel plate descaling device (use).
Description of symbols in figure:
1 steel plate；10 manufacturing devices；11 hot finishing mill lines；12 conveying rollers；13 dehydration rolls；20 cooling devices；21 top sides Water supplying unit；22 spray heads；23 nozzles；24 nozzle bodies；25 open and close valves；The water supplying unit of 31 following sides.

Claims (4)

1. a kind of nozzle is used for the cooling device or descaling device of hot rolled steel plate, water is sprayed towards the object as target, it should Nozzle is characterized in that,
Have:
Nozzle body has the flow path of the water；And
Valve is configured at the inside of the flow path of the nozzle body,
At least part in the inner surface of the flow path, including the position contacted with the valve is formed with by eka-gold The envelope that hard rock coating is constituted,
The valve is the component for the bottomed tube that in a side side there is bottom and another party side to be opened,
It is equipped with hole in a part of the side wall of the valve, by the inside and outside connection of the valve,
Gap is formed between the valve and the inner surface of the flow path,
When the valve is in open state, pressure (hydraulic) water flows into inside from the hole of the valve, and then is sprayed from the open end of the valve Out, on the other hand, when the valve is in close state, it is prohibited to supply pressure (hydraulic) water.
2. nozzle according to claim 1, which is characterized in that
The valve is open and close valve.
3. nozzle according to claim 1 or 2, which is characterized in that
The position of the contact is: due to the valve is contacted with the inner surface of the flow path and forbid the water injection and Since the valve is moved to the position for the injection for allowing the water from the posture that the contact is detached from.
4. nozzle according to claim 1 or 2, which is characterized in that
The position of the contact is: the position that the valve is contacted with the stream inner surface always, and is with the valve The position of the contact is opened and closed at the position that the stream inner surface is slided.
CN201380046338.4A 2012-09-26 2013-06-26 nozzle Expired - Fee Related CN104781014B (en)

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JP2012212036A JP5972132B2 (en) 2012-09-26 2012-09-26 nozzle
JP2012-212036 2012-09-26
PCT/JP2013/067471 WO2014050234A1 (en) 2012-09-26 2013-06-26 Nozzle

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IN2015DN01820A (en) 2015-05-29
US20150217351A1 (en) 2015-08-06
CN104781014A (en) 2015-07-15
US9387528B2 (en) 2016-07-12
JP2014064994A (en) 2014-04-17
KR20150047511A (en) 2015-05-04
JP5972132B2 (en) 2016-08-17
KR101759407B1 (en) 2017-07-31

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